Safety razor



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Patented Apr. 6,y 1926.

UNITED STATES 'WILLIAJM` F. VON HAMMEBSTEIN, 0F LOS ANGELES, CALIFORNIA.

SAFETY' RAZOR.

. Application meav september 1'2., 1924. serial No. 737,358.

To all whom t mag/concem:

Be it known that I, WILLIAM F. voN HAM- MERSTEIN, a citizen of the United States, and a resident of Los Angeles, in the county of 5 Los Angeles and State of California, have invented a new and useful Improvement in Safety Razors, of which the following is a full, clear, and exact description.

My invention relates to im rovements in l0 safety razors and more particu arly that type of razor having three edges, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a safety razor of the character described having three cutting edges in which novel means is employed for permitting the user to keep track of which of the cutting edges have been used and therefore which edges are fresh for use the next time the razor is used, and after the blade has been removed for cleaning.

A further object vof my invention is to provide a safety razor in which particularly novel mechanism is employed for holding the blade retaining member placed upon the razor so as to flex the guard sufficiently to turn the edge to the proper angle for shavm further object of myinvention is to provide a safety razor of the character described. in which novel means is employed for preventing the blade from turning or shifting laterally when the 'biade retaining member I is in positionu l A further objectof my invention is to provide a safety razor of the character described in which the bladeis so formed as to permitextreme exibility at those portionsl adjacent to the cutting edges, yet in which no possibility of splitting the blade is present, as in 'the case cf ordinary biades in which radial splits are provided to permit the flexing of the blade.

A further object of my invention is-to provide a safety razor of the character described which the guard is held substan tially rigid and in which the reenforcing members employed to establish rigidity do not in any way hinder the accumulation of iather upon `the guard.

@ther objects and advantages will appear in the feiiowing specifications vand the novel features oi? the invention will be particularly pointed out in the appended claims.

Edy invention is illustrated ,in the accompanying drawings forming a part of this appllcation in which:

Figure 1 is a side elevation of an embodiment of my invention, I

Figure 2 is a top plan view of the mechanism shown in Figure 1 with a portion thereof broken away. l

Figure 3 is a bottom view of the mechaJ msm shown in Figure 1.

Figure 4 is a sectional view along the line 4-4 of Figure .2,

Figure 5 is a sectional view along the line 55 of Figure 3, and

Figure 6 is a top plan view of one of the blades. n Y In carrying out my invention I make use of a triangular shaped Ymember 1 having portions of the side walls knurled as shown in Figure 2 so as to afford a non-slip 'grip upon the handle. A triangular guard member 3 is'mounted at the upper end of the .handle 1 and is provided with reenforcing vbars 4 extending from a point adjacent to the outer corners of the guard to the triangular shaped member 1 for a short distance beneath the guard. This structure leaves the entire space beneath the bars 4 free and thus the surface of the guard is left unobstructed between the opposite ends of the work engaging edges so that lather may accumulate thereupon during the process of shaving and also so that the guard may be cleansed.

Additional reenforcing members are provided in rigidl cross piecesl 5 extending between each of the adjacent sides of the webs 4 to a point below the under surface of the guard 3 out of engagement with the side walls of the handle. An inscription is placed on each of the reenforcing .members 5 denoting numerals from 1 to 3 inclusive.

rllhe blade retaining member 6 (see Figure 4) is provided for retaining the exible blade 7 in engagement with the guard 3 whereby the blade will be held in an operative position for use.

rlihe member 6 is substantially triangular in contour and the upper surface is curved as shown at 8 so as to present a smooth area which will not irritate the esh of the per son using the razor as it is drawn over the face. The downwardly extending cylindrical lug 9 is centrally located on the under side of the retaining member 6 and is arranged to be received in a cylindrical socket 10 in the handle member 1 for the purpose of preventing lateral movement of the retaining member relative to the handle when placed thereon.

Three radially extending bosses' 11 are provided on the side wall ot the cylindrical lug 9 adjacent to the surface of the retain- The blade 7 has an aperture 12 there through which is similar in contour to the lug 9 adjacent to the under surface of the retaining member 6. Thus the blade is held against rotation when placed between the retaining member and the guard member 3.

This blade Z is of an especially novel structure and is shown in Figure 6u Three cutting edges a, b and c are provided. Legends indicating numerals from -1 to 3 are inscribed upon the bladel 7 in registration with the cutting edges a, Z), and c, respectively. This is for the purpose of permitting the readjustment of the handle member on the guard 3 in precisely the same position as it occupied when the razor was last' used so that the person using the razor may know which oit the edges have been used and which remain fresh tor future use. Obviously the blade l must be removed for cleansing and drying, and it no means ot identication or posltion were provided it would be impossible to lmovv which oit the edges have been used. 4

The corners ot the blade 7 are cut away, leaving an obtuse angle recess 13 at each corner so that the blade 'l' may be readily ned, i.. e., bent downwardly toward the worlr engaging edges ot the guard '3 in the manner shown in Figure 5,

ldeans for locking the retaining member 6 upon the guard member 3 with the blade 'l' therebetween is provided in three spring metal substantially semi-circular locking members lll, pivotally mounted upon the retaining member 6. at 15. The guard member d has depending ribs 16 extending parallel with the pivotal mounting 15 ot the locking members 1d by means of which curved portions 1? at the outermost ends ot the locking members 14 may engage with the guard 3 so as to draw the spring locking members slightly, thus holding the retaining member 6 in close engagement with the blade 7, This causes blade 7 to conform with the contour oi the guard 3 and to lie in its proper opera ive position between the blade and the assenso are in registration with the reentorcing' members 5 bearing legends l and 2. The blade may be removed and dried, and re placed with the legends 1 and 2 in res'trao tion with the legends 1 and 2 on te re enforcing .members 5. @n taking up the razor for shaving the user will note that the edge c of the blade 7, distinguished by the lnumeral Son the reenforcing member '5, is a fresh edge and may be used as such.

ln fixing the blade 'i' by locking the re taining member 6 upon the guard, there is no possibility of splitting the blade as in bil the ordinary type of triple-edge blade..`

This is made possible by t e provision et an obtuse recess 13 in the corners at the angle. The blade 7 is substantially an equilateral triangle having a sixty angle between each et the adjacent egcsa The angle between the side wall ot the recess 13 is therefore 120 degrees, thus establish ing the side walls ot they recess perpendicun1 lar to the cutting edges a, b, and c.,

Tn removing and replacing the blade 7, very little manual labor is required, since the release of any two ofthe looiidng embers 4I4: will immediately permis removal of the retaining member o which may be replaced quickly, and the locking members placed into position over the ribs 1li, as shown in Figure 5.,

An accumulation oz? lather on guard members 3 is not hindered in be cause oi the reenter-sing members'd the members 5, since these elements are car 1 fully arranged upon the guard so es to tree the upper space adjacent to the Work engaging edge,

T claim:

l. A razor or the character de scribed comprising guard member, a handie for supporting said guard member, e triangular blade having three cutting ed, said blade being termed with recemes at each corner thereof, the side Walls o the recesses being disposed at an obtuse angle "from one another, and means associated with said guard member tor clampin blade to said guard member and tor'he'ning said blade adjacent to each ot the edges.

2. A safety razor of the character scribed comprising a guard member, time dle tor supporting said gue-rd men/ibs los lll@

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means comprising spring locking members pivotally secured at one end to the retaining member and arranged' to extend downward- 1y into engagement with the under surface of said guard.y

3. A safety razor of the character described comprising a triangular guard member, a 'handle for supporting said guard member, a socket of angular contour pro# vided in the yupper surface of said guard' member, a triangular blade having a center opening therethrough arranged to register with the socket in said guard and conforming to the contour of said socket, a retaining member having a lug arranged to be projected through the opening in said guard member and to f t a socket in said guard member, whereby said retaining member and said blade are held against one another and said guard and means for locking said retaining member against movement away from said' guard.

4. A 'safety razor of the character de- `to sald blade a jacent to each of the edges.

ber, a handle for sup orting said guard member, reenforcing we s disposed between Y said handle and said guard member'in, registration with the corners of said trian lar guard member, cross bars disposed tween said web members below said guard member, a blade and a blade retaining. means for securing said blade relative t0 said guard.

5. A safety razor of the character described comprising a guard member, a handle for supporting said guard iember, a triangular blade having three cutting edges, said blade being formed with recesses in each corner-thereof, the side walls of the recesses being disposed at right angles to the adjacent cutting edge, and means associated with said guard member for clamping said blade uard member and for' flexing said WILLAM F. VON HAMMERSTEIN. 

